Multiple vulnerabilities in Microsoft .NET Framework

Published: 2019-07-10 | Updated: 2019-07-11
Severity Medium
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2019-1083
CVE-2019-1113
CWE ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software Microsoft .NET Framework Subscribe
Visual Studio
Vendor Microsoft

Security Advisory

1) Input validation error

Severity: Medium

CVSSv3: 4.6 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1083

CWE-ID: CWE-20 - Improper Input Validation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the Microsoft Common Object Runtime Library. A remote unauthenticated attacker can send a specially crafted HTTP request to the affected .NET application and cause a denial of service condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0, 3.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1083

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

Severity: Medium

CVSSv3: 6.5 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1113

CWE-ID: CWE-20 - Improper Input Validation

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input when the software fails to check the source markup of a file.

An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user in .NET software. Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of .NET Framework.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft .NET Framework: 2.0, 3.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8

Visual Studio: 2017, 2017 version 15.9, 2019 version 16.0, 2019 version 16.1

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1113

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.